Paul ShafferAge: 62Occupation: Composer and BandleaderKnown For: Being David Letterman’s sidekick and bandleader for almost 30 years, being a member of the ‘Saturday Night Live’ house band in the 1970s and regularly appearing in the show’s sketches, and recording with artists such as Diana Ross, B.B. King, Cyndi Lauper, Cher, and Chicago